After releasing OpenCPN 4.0, the plugins are being migrated to the official OpenCPN PPA repository.
To configure the your system to use the official repository, follow the instructions at Ubuntu PPA
After adding the repository, you can use the Software Center to install the OpenCPN plugins as any other software package or use the command line tools
sudo apt-get update
sudo apt-get install opencpn-plugin<PLUGIN_NAME>
where <PLUGIN_NAME> is the name of the plugin. For example, to install the WMM plugin, the complete commad will be:
sudo apt-get install opencpn-plugin-wmm
However there may be some plugins that do not follow this nomenclature such as:
sudo apt-get install oesenc-pi
sudo apt-get install oernc-pi
Check the correct name on the download page.
On the popular Ubuntu distribution using the Unity desktop environment, the menus are not part of the application windows, but always displayed on the top of the screen.
All the menus shown as part of windows in this manual should appear there, as shown on the attached screenshot of the WR window active. Note: KDE does not have this problem.
This default behaviour can be easily changed in 14.04 and newer as described in Ubuntu desktop moving application menus back into application windows.
The situation is similar to Ubuntu above.
Unfortunately, the new packages conflict with the plugins downloaded originally from opencpn.org. To resolve the conflict, either uninstall the plugin before using the version from the PPA or open the Terminal and use the following command to install a plugin:
sudo apt-get -o Dpkg::Options::=“–force-overwrite” install opencpn-plugin-<PLUGIN_NAME>
where <PLUGIN_NAME> is the name of the plugin, for example to install the Weatherfax plugin, the complete command will be:
sudo apt-get -o Dpkg::Options::=“–force-overwrite” install opencpn-plugin-weatherfax
yum install opencpn-plugin-<PLUGIN_NAME>
All valid plugins are automaticaly installed when installing OpenCPN generic package.
Update is done automatically or via command “sudo zypper up”
See OpenSUSE wiki